−6x4−3x2y2+5y4-6x^4-3x^2y^2+5y^4−6x 4−3x2y2+5y4minus, 6, x, start superscript, 4, end superscript, minus, 3, x, squared, y, squared, plus, 5, y, start superscript, 4, end superscript from 2x4−8x2y2−y42x^4-8x^2y^2-y^42x4−8x2 y2−y4

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

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